Thanks all, very informative-- as this old geezer learned of noise
figure/factor , in the early 60's. and about the time Satelite TV
appeared started seeing reference to noise temp, but was never
too worried about the difference- just curious. and -as I
check this group every couple-3 days, and usually only down
load the most recent 35 pages- must have missed the original
postings. Always wondered if compairing apples to apples,
or to oranges! Now I know ! Again , TNX & 73 Jim NN7K

Richard Clark wrote:
On Sun, 22 Mar 2009 06:34:03 GMT, Owen Duffy wrote:

Richard Clark wrote in
:

On Fri, 20 Mar 2009 19:46:53 -0700, "Joel Koltner"
wrote:

Say I have an antenna that I know happens to provide an SNR
of 60dB...
I've been following this saga for a while now, and I note no one seems
nonplused by the statement above. For as much that has been unsaid,
there must be a flood of presumptions that flowed from this detail.
Indeed. I addressed some in my second posting, perhaps you missed it?

Owen